Local voters decided several matters at the polls Tuesday, including selectman and school committee races and an override to restore the town coordinator position.

In the selectman race, Mark Reil defeated Michael Ammendolia for a three-year seat by a 376-231 margin.

Challenger Reil is one of the town's park commissioners and its Green Communities project manager. When running for office, Reil spoke about tapping into the expertise of local residents to help run the town. Reil previously ran a write-in campaign against Selectman Lawney Tinio in 2010.

"I'm very pleased, and I look forward to serving on the board," Reil said Tuesday. "I stood outside for 13 hours today, and it paid off."

Reil said he met a lot of people during his campaign, and put in a lot of work - an attitude he hopes to apply to his time on the board.

Ammendolia, the incumbent, had served on the board for six years, and was its chairman. Ammendolia congratulated Reil as the results were read.

"The people have spoken," he said.

In the School Committee race, Diane Duncan defeated Kevin Rudden by a 321 to 284 margin.

"I'm thrilled," Duncan said. "I'm hopeful that I can work to make the Mendon-Upton School District better and stronger."

The three year seat had been occupied by Kathleen Drennan, who did not seek re-election.

Voters defeated a $110,000 override to restore an executive position to the town, with 376 "no" votes to 218 "yes" votes. The town has been without such an officer since 2011, when it laid off Town Coordinator Dale Pleau in a cost-cutting move.

Officials had proposed the move, noting that the town had missed out on various grant and cost-cutting opportunities by not having an administrator or coordinator.

Police and Fire Chief Ernest Horn had served as interim town coordinator, but his term ended on May 1.

The override was approved through voice vote at Mendon's May 3 Annual Town Meeting.

Proposed overrides for a Highway Department tractor and joining the Central Massachusetts Mosquito Control Project were also defeated.